/Engine/Plugins/Editor/AssetManagerEditor/Source/AssetManagerEditor/Public/AssetManagerEditorModule.h
Sets up a registry source. If InOutRegistrySource->SourceName is CustomSourceName, a dialog will be presented to select the asset registry to load
bool PopulateRegistrySource ( [FAssetManagerEditorRegistrySource](API\Plugins\AssetManagerEditor\FAssetManagerEditorRegistrySourc-) * InOutRegistrySource )